/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors 
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.dxf2.metadata.objectbundle.hooks;

import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.hisp.dhis.common.IdentifiableObject;
import org.hisp.dhis.common.VersionedObject;
import org.hisp.dhis.dataset.DataSet;
import org.hisp.dhis.dataset.Section;
import org.hisp.dhis.dxf2.metadata.objectbundle.ObjectBundle;
import org.hisp.dhis.option.Option;
import org.hisp.dhis.option.OptionSet;
import org.springframework.stereotype.Component;

/**
 * Handles increase of version for objects such as data set and option set.
 *
 * @author Morten Olav Hansen <mortenoh@gmail.com>
 */
@Component
public class VersionedObjectObjectBundleHook extends AbstractObjectBundleHook<IdentifiableObject> {
  @Override
  public void preUpdate(
      IdentifiableObject object, IdentifiableObject persistedObject, ObjectBundle bundle) {
    if (object instanceof VersionedObject) {
      VersionedObject versionObj = (VersionedObject) object;
      int persistedVersion = ((VersionedObject) persistedObject).getVersion();

      versionObj.setVersion(
          persistedVersion > versionObj.getVersion()
              ? persistedVersion
              : persistedVersion < versionObj.getVersion()
                  ? versionObj.getVersion()
                  : versionObj.increaseVersion());
    }
  }

  @Override
  public void postCreate(IdentifiableObject persistedObject, ObjectBundle bundle) {
    VersionedObject versionedObject = null;

    if (persistedObject instanceof Section) {
      versionedObject = ((Section) persistedObject).getDataSet();
    } else if (persistedObject instanceof Option) {
      versionedObject = ((Option) persistedObject).getOptionSet();
    }

    if (versionedObject != null) {
      versionedObject.increaseVersion();
      getSession().save(versionedObject);
    }
  }

  @Override
  public <T extends IdentifiableObject> void postTypeImport(
      Class<T> klass, List<T> objects, ObjectBundle bundle) {
    if (Section.class.isAssignableFrom(klass)) {
      Set<DataSet> dataSets = new HashSet<>();
      objects.forEach(
          o -> {
            DataSet dataSet = ((Section) o).getDataSet();

            if (dataSet != null && dataSet.getId() > 0) {
              dataSets.add(dataSet);
            }
          });

      dataSets.forEach(
          ds -> {
            ds.increaseVersion();
            getSession().save(ds);
          });
    } else if (Option.class.isAssignableFrom(klass)) {
      Set<OptionSet> optionSets = new HashSet<>();

      objects.forEach(
          o -> {
            Option option = (Option) o;

            if (option.getOptionSet() != null && option.getId() > 0) {
              optionSets.add(option.getOptionSet());
            }
          });

      optionSets.forEach(
          os -> {
            os.increaseVersion();
            getSession().save(os);
          });
    }
  }
}
